Reamer



May 31 1927. 1,630,602

F. F. BLANCO REAMER Filed nay' 4. 1925 Mo I' /4/ Patented May 31, 1927.

FLOBINO F. BLANCO, OF SAN JOSE, COSTA RICA.

BEAMER.

Application filed May 4, 1925. Serial No. 27,970.

This invention relates to an improved reamer and seeks, among other objects, to provide a. tool of this character which will `itunction efticientllv without the necesslty ot turning the realner at an excessive speed.

A further object of the invention .is to provide `a rearner which. reason ot'l the peculiar character and disposition ot its teeth, will cut a clean, smooth bore.

And the invention seeks, as a still itin'- ther object, to provide a reainer which will provide for the free and easv clearance el' the shavings so that the 'earner will not Attention .is now directed to the fact that, as particularly shown in Figure 2, the teeth oil. the rows l2 are helically inclined forward ly and downwardly while the teeth of the rows 13 are helically inclined rearwardl)7 and upwardly. ln other words, said teeth are presented in opposite directions so thatwhile the teeth of the rows l2 are functioningr to enter the worlr or the teeth ot the rows 13 linish the wall linishine will function to ot the bore or opening. This :tunction of the teeth ot the rows stick. also best shown in Figure 2. said teeth are @ther and incidental objects will appear staggered with respect to the teeth of the hereinafter. rows l2 so that the finishingaction of the In the accompanying drawings .Y

Figure l is a side elevation ot my unproved realner.

Fieure 2 is a fragmentary1 development or schefnatic view ofthe reainer, partcularl)7 showingr the disposition of the teeth thereof.

Figure 3 is a top plan View of the tool.

Figure 4 is a transverse sectional view on the line t--fit of Figure l.

ln carrying the invention into ell'ect, employ a body l() which is erathuzlly tapered toward its lower or forward end while at its upper or rear end the bodv is provided with a squared terminal ll. (.)utstandlnpr troni the bod)7 are tour quadrantly spaced hainatudinallv extendingv rows o'l' teeth. two ot' which rows are .indicated at l2 while lthe other two rows are indicated at 13. These ot' the lintermediate rows.

i realner comprising; a bodyv provided rows of teeth extend throughout 'the major portion of the length ot' the body and. as will AV i 1,@ Obsewe'p the mm; 19 my@ djmnetylmly with spaced ribs and concave channels sepaopposite while the rows 13 are dianretricalh7 rating.;` the ribs, andhavint' siniilajiy i opposite so that the rows alternate. Between clined teeth upon the outer faces ot the the rows of teeth are concave channels fl/l to ribs. the teeth otv alternate rilos inc-lining in accommodate the free clearance of shavingrs. an Opposite diygptjm t@ The number ot rows of teeth, as well as the intermediate ribs. e number ot channels and the number ot' teeth .ln testimony whereof I allix my signature.

in each row will, of course, be determined hy p the length and diameter of the tool body. FLORINO F. BLANCO. [1.. s;]

teeth ot the former rows will overlap the cutting action of the teeth ot the latter rows. Furthermore. the teeth oit' the rows .lil will tend to eject the shavings to obviate clogging so that the tool will operate with ease 'to hoth cut and .tinish the teeth are ot the saine pitch and the teeth of the rows l2 are backed oil' at their upper sides while the teeth ot the rows 13 are baci-:ed oil at their lower sides to produce a salient@Y toathe cuttingedges of the teeth.

.Havingl t-hus described t-he invention, what l claim is:

l. A reanier coinprisiirr.y a body havingr spaced rows ol teeth, the teeth of the several rows similarlyv im'linine' tluoughout their length. and the teeth ot alternate rows incliningll .in al reverse direction to the teeth advance the toch 15E is materially enhanced bv the `tact that, asV

sinniltancouslv. All ot e5 the teeth of .the 

